Design and Development of Automatic Lie Detector using Arduino

The detection of lies in the internet age continues to be a difficult problem for law enforcement and researchers. This paper proposes an Arduino-based technique for lie detection that relies on the psychosomatic interaction between lying and small physiological modifications. The three physiological variables used in this model are heart rate, skin resistance, and temperature. These variables differ depending on whether a person answers the questionnaire honestly or dishonestly.